$315+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
May 29 — Jun 51
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Friday and return on a Tuesday
Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:00 am
SEA
- HEL
2 stops28h 35m
Multiple Airlines
Thu 8/207:05 am
HEL
- SEA
2 stops24h 02m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$568
This Trip.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:40 pm
SEA
- HEL
2 stops16h 40m
Multiple Airlines
Mon 8/317:05 am
HEL
- SEA
2 stops23h 35m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$634
This Trip.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm
SEA
- HEL
1 stop32h 40m
Scandinavian Airlines
Thu 10/14:00 pm
HEL
- SEA
1 stop31h 45m
Scandinavian Airlines
Deal found 4/29![Scandinavian Airlines logo]()
$742
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 pm
SEA
- HEL
2 stops15h 35m
Multiple Airlines
Mon 6/17:15 am
HEL
- SEA
2 stops23h 25m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$783
This oojo deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 pm
SEA
- HEL
2 stops14h 45m
Icelandair
Tue 9/2912:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 4/26![Icelandair logo]()
$795
This oojo deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:00 pm
SEA
- HEL
2 stops14h 40m
Icelandair
Wed 10/2112:30 pm
HEL
- SEA
2 stops18h 10m
Icelandair
Deal found 4/26![Icelandair logo]()
$811
This oojo deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 pm
SEA
- HEL
2 stops14h 45m
Icelandair
Thu 10/13:55 pm
HEL
- SEA
2 stops14h 45m
Icelandair
Deal found 4/29![Icelandair logo]()
$813
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 5/127:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$816
This oojo deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:40 pm
SEA
- HEL
2 stops17h 00m
Icelandair
Wed 10/712:30 pm
HEL
- SEA
2 stops15h 25m
Icelandair
Deal found 4/26![Icelandair logo]()
$818
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:40 pm
SEA
- HEL
3 stops30h 40m
Multiple Airlines
Wed 6/35:30 am
HEL
- SEA
3 stops25h 10m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$820
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
This Turkish Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 9/158:20 am
HEL
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$858
This Mytrip deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 pm
SEA
- HEL
2 stops18h 50m
Multiple Airlines
Sun 9/209:00 am
HEL
- SEA
3 stops43h 45m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$899
This Icelandair deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:00 pm
SEA
- HEL
2 stops14h 45m
Icelandair
Tue 10/1312:30 pm
HEL
- SEA
2 stops15h 25m
Icelandair
Deal found 4/25![Icelandair logo]()
$936
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:20 am
SEA
- HEL
2 stops23h 20m
Delta
Mon 10/191:55 pm
HEL
- SEA
1 stop31h 57m
Delta
Deal found 4/26![Delta logo]()
$1,026
This Finnair deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/265:40 pm
SEA
- HEL
Nonstop9h 30m
Finnair
Sun 8/24:20 pm
HEL
- SEA
Nonstop9h 40m
Finnair
Deal found 4/25![Finnair logo]()
$1,203
This Turkish Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:10 pm
SEA
- HEL
1 stop37h 30m
Turkish Airlines
Tue 10/138:20 am
HEL
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$926
This Icelandair deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- HEL
1 stop28h 35m
Icelandair
Wed 8/123:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 4/24![Icelandair logo]()
$1,051
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/311:30 pm
SEA
- HEL
1 stop17h 10m
Delta
Tue 6/167:00 am
HEL
- SEA
1 stop19h 24m
Delta
Deal found 4/28![Delta logo]()
$1,149
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated April 29, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Thu 5/77:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/24![Turkish Airlines logo]()
$836
This Justfly.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 5/127:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$867
This Justfly.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 5/127:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$829
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Tue 5/127:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$816
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Thu 5/148:20 am
HEL
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$843
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
SEA
- HEL
1 stop30h 00m
Turkish Airlines
Fri 5/157:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$844
This FlightHub deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Tue 5/127:35 pm
HEL
- SEA
1 stop31h 40m
Turkish Airlines
Deal found 4/26![Turkish Airlines logo]()
$848
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:10 pm
SEA
- HEL
1 stop18h 45m
Turkish Airlines
Thu 5/148:20 am
HEL
- SEA
1 stop18h 55m
Turkish Airlines
Deal found 4/28![Turkish Airlines logo]()
$850
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 pm
SEA
- HEL
2 stops15h 35m
Multiple Airlines
Mon 6/17:15 am
HEL
- SEA
2 stops23h 25m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$783
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:40 pm
SEA
- HEL
3 stops30h 40m
Multiple Airlines
Wed 6/35:30 am
HEL
- SEA
3 stops25h 10m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$820
This Mytrip deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/313:55 pm
SEA
- HEL
3 stops22h 45m
Multiple Airlines
Tue 6/165:30 am
HEL
- SEA
3 stops18h 15m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$868
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 pm
SEA
- HEL
2 stops27h 20m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 pm
SEA
- HEL
2 stops27h 20m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:00 pm
SEA
- HEL
3 stops52h 45m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:25 pm
SEA
- HEL
3 stops46h 55m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:25 pm
SEA
- HEL
3 stops38h 25m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/3011:25 pm
SEA
- HEL
2 stops23h 50m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$450
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/141:30 pm
SEA
- HEL
3 stops25h 10m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$459
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $568 (Mytrip) |
One-way from | $311 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $918 |
Good round-trip deal | $1,112 or less |
Good one-way deal | $425 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 9/1
7:10 pm-11:10 am
1 stop30h 00m
Helsinki-Vantaa
Tue 9/15
8:20 am-5:15 pm
1 stop18h 55m
$858
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 8/30
7:00 pm-11:50 pm
2 stops18h 50m
Helsinki-Vantaa
Sun 9/20
9:00 am-6:45 pm
3 stops43h 45m
$899
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 10/9
7:10 pm-6:40 pm
1 stop37h 30m
Helsinki-Vantaa
Tue 10/13
8:20 am-5:15 pm
1 stop18h 55m
$926
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 10/9
7:00 pm-7:45 pm
2 stops14h 45m
Helsinki-Vantaa
Tue 10/13
12:30 pm-5:55 pm
2 stops15h 25m
$936
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Wed 10/7
7:20 am-4:40 pm
2 stops23h 20m
Helsinki-Vantaa
Mon 10/19
1:55 pm-11:52 am
1 stop31h 57m
$1,026
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 8/3
11:25 pm-2:00 pm
1 stop28h 35m
Helsinki-Vantaa
Wed 8/12
3:00 pm-8:40 pm
1 stop15h 40m
$1,051
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 5/31
1:30 pm-4:40 pm
1 stop17h 10m
Helsinki-Vantaa
Tue 6/16
7:00 am-4:24 pm
1 stop19h 24m
$1,149
Quickest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 7/26
5:40 pm-1:10 pm
Nonstop9h 30m
Helsinki-Vantaa
Sun 8/2
4:20 pm-4:00 pm
Nonstop9h 40m
$1,203
Cheapest one-way
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Thu 5/14
1:30 pm-12:40 am
3 stops25h 10m
$459
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 8/18
7:10 pm-11:55 pm
1 stop18h 45m
$549
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $539). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,182). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Helsinki?
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated April 29, 2026.
Get a feel of what it's like to fly with Finnair,Scandinavian Airlines, andAmerican Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Entertainment
6.9
Crew
8.2
Overall
7.6
Comfort
7.4
Food
6.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Boarding
7.7
Entertainment
6.9
Crew
8.2
Overall
7.6
Comfort
7.4
Food
6.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Boarding
7.7
Entertainment
6.9
Crew
8.2
Overall
7.6
Comfort
7.4
Food
6.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Boarding
7.7
Entertainment
6.9
Crew
8.2
Overall
7.6
Comfort
7.4
Food
6.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Boarding
7.7
Entertainment
6.9
Crew
8.2
Overall
7.6
Comfort
7.4
Food
6.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Boarding
7.7
Entertainment
6.9
Crew
8.2
Overall
7.6
Comfort
7.4
Food
6.7
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
HEL - KAO
Related info for your journey
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Top 6 airlines flying from Seattle to Helsinki
Discover the top 6 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$548 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$424 | Average$826 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$496 | Average$1,028 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$536 | Average$1,056 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$700 | Average$1,107 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$725 | Average$1,093 | FlexibilityNo cancel fee | On-time70% |